102243313921 has 4 divisors (see below), whose sum is σ = 116849501632. Its totient is φ = 87637126212.

The previous prime is 102243313901. The next prime is 102243313967. The reversal of 102243313921 is 129313342201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102243313921 - 2²³ = 102234925313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102243313901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7303093845 + ... + 7303093858.

It is an arithmetic number, because the mean of its divisors is an integer number (29212375408).

Almost surely, 2^102243313921 is an apocalyptic number.

It is an amenable number.

102243313921 is a deficient number, since it is larger than the sum of its proper divisors (14606187711).

102243313921 is an equidigital number, since it uses as much as digits as its factorization.

102243313921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14606187710.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 102243313921 in words is "one hundred two billion, two hundred forty-three million, three hundred thirteen thousand, nine hundred twenty-one".